10646531145 has 24 divisors (see below), whose sum is σ = 18952746696. Its totient is φ = 5524685568.

The previous prime is 10646531123. The next prime is 10646531177. The reversal of 10646531145 is 54113564601.

10646531145 is a `hidden beast` number, since 1 + 0 + 646 + 5 + 3 + 1 + 1 + 4 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1802257209 + 8844273936 = 42453^2 + 94044^2 .

It is not a de Polignac number, because 10646531145 - 2⁶ = 10646531081 is a prime.

It is a super-2 number, since 2×10646531145² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3195492 + ... + 3198821.

It is an arithmetic number, because the mean of its divisors is an integer number (789697779).

Almost surely, 2^10646531145 is an apocalyptic number.

10646531145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10646531145 is a deficient number, since it is larger than the sum of its proper divisors (8306215551).

10646531145 is a wasteful number, since it uses less digits than its factorization.

10646531145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6394361 (or 6394358 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 10646531145 in words is "ten billion, six hundred forty-six million, five hundred thirty-one thousand, one hundred forty-five".